Die Habsburger waren nach dem Sturz der Monarchie österreichische Staatsbürger, mussten aber im Exil leben. Deshalb waren ihre Pässe für alle Länder außer Österreich gültig.
After the fall of the Habsburg monarchy in 1918 and the establishment of the Austrian Republic, members of the former Imperial Family were exiled and forbidden to enter Austrian territory. Nevertheless, they remained Austrian citizens entitled to bear an Austrian passport. Such passports were unique in bearing the stamp stating that “this passport is valid for all countries except for Austria”. The Habsburgs’ exile was eventually overturned by the European Court of Human Rights and these special type of passport along with it.